Support video views/viewers stats in server

 * Add "currentTime" and "event" body params to view endpoint
 * Merge watching and view endpoints
 * Introduce WatchAction AP activity
 * Add tables to store viewer information of local videos
 * Add endpoints to fetch video views/viewers stats of local videos
 * Refactor views/viewers handlers
 * Support "views" and "viewers" counters for both VOD and live videos

1 files changed, 5 insertions, 26 deletions

diff --git a/server/controllers/api/videos/index.ts b/server/controllers/api/videos/index.ts
index c7617093c..be233722c 100644
--- a/server/controllers/api/videos/index.ts
+++ b/server/controllers/api/videos/index.ts
@@ -1,7 +1,6 @@
 import express from 'express'
 import { pickCommonVideoQuery } from '@server/helpers/query'
 import { doJSONRequest } from '@server/helpers/requests'
-import { VideoViews } from '@server/lib/video-views'
 import { openapiOperationDoc } from '@server/middlewares/doc'
 import { getServerActor } from '@server/models/application/application'
 import { guessAdditionalAttributesFromQuery } from '@server/models/video/formatter/video-format-utils'
@@ -13,7 +12,6 @@ import { logger } from '../../../helpers/logger'
 import { getFormattedObjects } from '../../../helpers/utils'
 import { REMOTE_SCHEME, VIDEO_CATEGORIES, VIDEO_LANGUAGES, VIDEO_LICENCES, VIDEO_PRIVACIES } from '../../../initializers/constants'
 import { sequelizeTypescript } from '../../../initializers/database'
-import { sendView } from '../../../lib/activitypub/send/send-view'
 import { JobQueue } from '../../../lib/job-queue'
 import { Hooks } from '../../../lib/plugins/hooks'
 import {
@@ -35,28 +33,30 @@ import { VideoModel } from '../../../models/video/video'
 import { blacklistRouter } from './blacklist'
 import { videoCaptionsRouter } from './captions'
 import { videoCommentRouter } from './comment'
-import { studioRouter } from './studio'
 import { filesRouter } from './files'
 import { videoImportsRouter } from './import'
 import { liveRouter } from './live'
 import { ownershipVideoRouter } from './ownership'
 import { rateVideoRouter } from './rate'
+import { statsRouter } from './stats'
+import { studioRouter } from './studio'
 import { transcodingRouter } from './transcoding'
 import { updateRouter } from './update'
 import { uploadRouter } from './upload'
-import { watchingRouter } from './watching'
+import { viewRouter } from './view'
 
 const auditLogger = auditLoggerFactory('videos')
 const videosRouter = express.Router()
 
 videosRouter.use('/', blacklistRouter)
+videosRouter.use('/', statsRouter)
 videosRouter.use('/', rateVideoRouter)
 videosRouter.use('/', videoCommentRouter)
 videosRouter.use('/', studioRouter)
 videosRouter.use('/', videoCaptionsRouter)
 videosRouter.use('/', videoImportsRouter)
 videosRouter.use('/', ownershipVideoRouter)
-videosRouter.use('/', watchingRouter)
+videosRouter.use('/', viewRouter)
 videosRouter.use('/', liveRouter)
 videosRouter.use('/', uploadRouter)
 videosRouter.use('/', updateRouter)
@@ -103,11 +103,6 @@ videosRouter.get('/:id',
   asyncMiddleware(checkVideoFollowConstraints),
   getVideo
 )
-videosRouter.post('/:id/views',
-  openapiOperationDoc({ operationId: 'addView' }),
-  asyncMiddleware(videosCustomGetValidator('only-video')),
-  asyncMiddleware(viewVideo)
-)
 
 videosRouter.delete('/:id',
   openapiOperationDoc({ operationId: 'delVideo' }),
@@ -150,22 +145,6 @@ function getVideo (_req: express.Request, res: express.Response) {
   return res.json(video.toFormattedDetailsJSON())
 }
 
-async function viewVideo (req: express.Request, res: express.Response) {
-  const video = res.locals.onlyVideo
-
-  const ip = req.ip
-  const success = await VideoViews.Instance.processView({ video, ip })
-
-  if (success) {
-    const serverActor = await getServerActor()
-    await sendView(serverActor, video, undefined)
-
-    Hooks.runAction('action:api.video.viewed', { video: video, ip, req, res })
-  }
-
-  return res.status(HttpStatusCode.NO_CONTENT_204).end()
-}
-
 async function getVideoDescription (req: express.Request, res: express.Response) {
   const videoInstance = res.locals.videoAll